Improvement in magazine fire-arms



UNiTEE STATES PATENT OE IcE.

PEDER BERGERSAN, oE cHEYENNE, WYOMING TERRITORY.

IMPROVEMENT lN MAGAZINE FIRE-ARMS.

Specification forming part of Letters Patent No. 215,557., dated May 20,1 879; application filed February 6, 1879.

To all whom it may concern:

Be it known that 1, PEDER BERGERSAN, of Cheyenne, in the county ofLaramie and Territory of Wyoming, have invented a new and usefulImprovement in Breech-Loading Fire- Arms, of which the following is aspecification.

My improvements relate to breech-loading fire-arms adapted for use asmagazine-guns or as single breech-loading rifles.

My improved gun is shown in the accompanyin g drawings, wherein Figure 1is a vertical longitudinal section, showing the breech mechanism closed.Fig. 2 is a cross-section on line w .r. Fig. 3 is a cross-section online y 3 Fig. 4 is a vertical longitudinal section with the breech open.

Similar letters of reference indicate corresponding parts.

The breech mechanism is opened and closed by means of a lever, a, hungon a fulcrum, a, that is held between ears projecting from the underside of the trigger-plate b.

Upon a screw-pin adjacent to fulcrum a is a small steel roller, 0, thatbears upon a platespring, 0", so that spring r retains the lever to inposition by yielding pressure. v

' The inner end of lever a is bent upward into the breech-cavity betweenthe side plates, b, and is connected, by a link, d, and link-pins c d,to the inner end of a tubular piston, A. This piston A carries thefiring mechanism, and is itself carried in the carrier-block B, that ishung at its rearend on a cross-pin, f, between side plates 1).

To open the breech, the lever to is swung downward, which action firstthrows the piston A backward in the block B, and then swings block B andpiston A on pin f, the inner end of B dropping down and opening thebreech, as shown in Fig. 4. In closing the breech the reverse motiontakes place.

Within piston A is the firing-bolt 9, projecting at the rear end of thepiston through the screw-cap 10. Connected with cap 20 is a guiderib,to, that projects into a groove in bolt g, to prevent it from turning.

his the mainspring of the firing-bolt, consisting of one or more coiledsprings acting between the cap w and a collar, h, on g.

The rear projecting end of bolt g is provided at its under side with atoothed projection a slide block, i, slotted to pass, when raised,

at each side of bolt g. From its under side a link, k, depends,extending through triggerplate I) to a cross-pin, l, in a mortise inlever to. The connection between it and lis by an open slot, so thatwhile the first movement of lever aacts to draw down block i the farthermovement of a disconnects lfrom 70. On the return movement of the leverthe pin 1 catches k, and raises block 6 to place after the breech isclosed.

The cartridge-extractor consists of a bent lever, 15, (see Fig. 3,dotted lines Figs. 1 and 2,) hung loosely on a cross-pin, u, the shorterarm of which lever is provided with a lug, t, that lies in a groove inthe barrel behind the cartridge-rim when the breech is closed. Thelonger arm of lever t is beneath a friction-roller on the link-pin c oflever a, so that when the breech is opened, as before described, thelonger arm of tis depressed and the cartridgeshell drawn out by lug t.By this construction the first motion of the extractor is slow andforcible in starting the cartridge, and then rapidly increases.

Upon the fulcrum-pin u of lever t is fixed the cut-off u of the magazine0. This cut-off consists of a collar on the pin to, having a radialprojection thatmay bethrown upon against the bottom cartridge by meansof an arm, n, on the projecting end of pin it outside the gun. In theother position the cut-off is turned down out of the way, and thecartridges are thrown out by a spring in the magazine, as usual.

To fill the magazine, the carrier-block B will first be depressed to itslowest point by means of lever to. The cartridges may then be pressed.in, one by one, through an opening in the top of the carrier-block,which opening is covered by a spring-cover, f, that may be depressed forthe insertion of the cartridge.

In using the magazine, the cut-off a will be turned down; then when thebreech is opened the inner end of the carrier-block drops to the levelof the magazine, and a cartridge enters the space left by the retractionof piston A. The cartridge is forced into the gun-barrel, when thebreechis closed, by the forward movement of piston A.

To prevent accidental discharge of the cartridge before the breech isclosed, a swing-stop, c, is fitted in the under side of piston A at theforward end, so that when the breech is opened this stop 6 projects inthe path of bolt 9, and prevents forward movement of the bolt. The stop6 is positioned where, in closing the breech, its tail will be acted onby link (I, and the stop turned out of the way.

By the described construction the gun may be used as a singlebreech-loader, and the cartridges inserted by hand. The carrier-block,piston, and slide-block constitute a compound breech-block that when inplace offers a solid and direct resistance to the cartridge.

The parts are simple, few in number, and durable. By having the partsperform the compound duties described the number of parts is reduced,and the breech mechanism rendered compact.

The gun may be easily taken apart, as the breech mechanism is allcarried upon the trigger-plate, an d the detachment of that plate fromthe gun permits the withdrawal of all the parts. Having thus describedmy invention, 1 claim as new and desire to secure by Letters Patent- 1.The combination, with the piston A and bolt g, of the slide-block 1',connected with le- PEDER BERGERSAN.

Witnesses Tues. M. FISHER, GAYLORD BELL.

